baber/WOPTO huggingface dataset:
Patent CA-2224489-A1 (CA)
Title: Procede d'oxydation hydrothermale
Inventor: HONG GLENN T
IPC: C02F1/02
Filed: 1996-07-24
Abstract: Procédé d'oxydation hydrothermale en flux continu, constituant un moyen peu coûteux de déclenchement et de propagation d'une réaction. La charge aqueuse-organique et l'agent oxydant sont introduits dans une petite chambre de réaction (2) où ils se mélangent avec le contenu échauffé et ayant partiellement réagi. Ce rétro-mélange permet de déclencher la réaction de la charge arrivante. De manière facultative, le contenu de la chambre (2) peut être admis dans un deuxième réacteur (4) situé en aval, pour permettre l'achèvement de la réaction d'oxydation.
Patent CA-2225189-A1 (CA)
Title: Canine factor viii gene, protein and methods of use
Inventor: LILLICRAP DAVID
IPC: C07K14/755
Filed: 1998-03-06
Abstract: The present invention provides isolated nucleic acid molecules encoding canine factor VIII and allelic variants, mutants, fragments or derivatives thereof. The invention also provides canine factor VIII polypeptides encoded by such isolated nucleic acid molecules, antibodies binding to such polypeptides, genetic constructs comprising such nucleic acid molecules, prokaryotic or eukaryotic host cells comprising such genetic constructs, and methods and compositions for use in diagnosing and treating canine disorders characterized by factor VIII deficiency.
Patent CA-2228144-A1 (CA)
Inventor: POSSAMAI MARIO
IPC: A24F15/18
Filed: 1998-02-25
Abstract: A multi-purpose accessory, characterised by consisting of a substantially parallelepiped rigid casing (1) able to house a packet (3) of cigarettes and a cigarette lighter (4), said casing comprising in a major surface a shaped depression (6) for resting the cigarette, an end portion of said casing comprising a cylindrical body (7) in which a corresponding container (11) is inserted, said cylindrical body (7) comprising a longitudinally slotted hole (9), said cylindrical container comprising a longitudinally slotted aperture (13), said cylindrical container (11) being rotatable axially between a position in which said slotted aperture (13) faces said slotted hole (9), and a position in which it doss not.
Patent CA-2231727-A1 (CA)
Title: Drug release stent coating process
Inventor: HELMUS MICHAEL N
IPC: A61L31/14
Filed: 1996-09-05
Abstract: A method of coating implantable open lattice metallic stent prosthesis is disclosed which includes sequentially applying a plurality of relatively thin outer layers of a coating composition comprising a solvent mixture of uncured polymeric silicone material and crosslinker and finely divided biologically active species, possibly of controlled average particle size, to form a coating on each stent surface. The coatings are cured in situ and the coated, cured prostheses are sterilized in a step that includes preferred pretreatment with argon gas plasma and exposure to gamma radiation electron beam, ethylene oxide, steam.
Patent CA-2236687-A1 (CA)
Title: Methods of assessing viability of microbial cultures
Inventor: RUTHERFORD WILLIAM M
IPC: C12Q1/04
Filed: 1996-11-05
Abstract: The present invention provides methods for rapidly determining the proportion of live, dead and stressed cells in a given microbial culture. The measurement of stressed cells is used as a quantitative indicator of the relative health of the population and the population's ability to withstand long term stress. The present methods comprise the steps of: (i) staining the culture with a combination of membrane-permeable and membrane-impermeable stains; and (ii) quantifiying the population of stressed cells, using the measurement thus obtained as an indicator of the relative health of the population.
Patent CA-2236699-A1 (CA)
Title: Immunity against actinobacillus pleuropneumoniae's rtx toxins apx
Inventor: HODGSON ADRIAN LESLIE MARK
IPC: A61K39/102
Filed: 1996-11-01
Abstract: The present invention provides a modified microorganism which produces an RTX  toxin, wherein said RTX toxin is partially or fully inactivated. In a further embodiment of the present invention, there is provided a modified microorganism wherein an RTX toxin gene including an RTX structural gene and/or a post-translational activator of the organism is partially or fully inactivated. The present applicants have found that a precursor of an RTX toxin has reduced toxic activity.  Surprisingly, the RTX toxin precursor is capable of inducing an immune response in an animal that offers cross protection against heterologous challenge with a microorganism which produces the RTX toxin. A microorganism which naturally produces an RTX toxin may be engineered to produce an inactive RTX toxin precursor by eliminating the post-translational activator of the precursor product.  Accordingly, in a preferred embodiment the microorganism is unable to produce a post-translational activator of the RTX toxin precursor or produces an inactivated post-translational activator of the RTX  toxin precursor. The post-translational activator may be a product of an RTX C  gene. In a further aspect the present invention provides a recombinant plasmid vector for expression of heterologous proteins in Actinobacillus or related organisms. In a preferred embodiment the recombinant plasmid vector is derived from a naturally occurring plasmid in Actinobacillus pleuropneumoniae. The recombinant plasmid may include a DNA sequence which encodes an RTX toxin precursor. The recombinant plasmid may include an RTX A gene. Alternatively, the recombinant plasmid may include an RTX C gene or a fragment thereof.
Patent CA-2239968-A1 (CA)
Title: Pyrimidine derivatives and guanine derivatives, and their use in treating tumour cells
Inventor: MCELHINNEY ROBERT STANLEY
IPC: C07D473/00
Filed: 1996-12-09
Abstract: The invention provides compounds exhibiting the ability to deplete O6-alkylguanine-DNA alkyltransferase (ATase) activity in tumour cells. The compounds include certain pyrimidine derivatives of formula (II), wherein R is (i) a cyclic group having at least one 5- or 6-membered heterocyclic ring, optionally with a carbocyclic or heterocyclic ring fused thereto, the or each heterocyclic ring having at least one hetero atom chosen from O, N, or S, or a substituted derivative thereof;  or (ii) phenyl or a substituted derivative thereof, R2 is selected from H, C1-C5 alkyl, halogen or NH2, R4 and R5 which are the same or different are selected from H, NH-Y' or NO n wherein Y' is H, ribosyl, deoxyribosyl, arabinosyl, (a) wherein X is O or S, R" is alkyl and R"' is H or alkyl, or substituted derivatives thereof, n = 1 or 2 or R4 and R5 together with the pyrimidine ring form a 5-or 6-membered ring structure containing one or more hetero atoms, and pharmaceutically acceptable salts thereof. They include certain guanine derivatives of formula (XIII), wherein R6 is as defined at (i) for R above and Y' is as defined above.
Patent CA-2240882-A1 (CA)
Inventor: ROMANO ROBERTA MARGHERITA
IPC: C11D1/83
Filed: 1996-12-06
Abstract: Compositions are disclosed which are suitable for the safe cleaning of delicate surfaces, i.e. marble and lacquered surfaces, e.g. lacquered wooden floors. The compositions disclosed herein comprise at least one anionic surfactant, they are free of strong builders, they are formulated in the mildly acidic to mildly alkaline pH range, and they comprise positive divalent ions in amounts so as to saturate the anionic surfactant in the composition.
Patent CA-2241701-A1 (CA)
Title: Method and system for secure distribution of cryptographic keys on multicast networks
Inventor: AZIZ ASHAR
IPC: H04L9/08
Filed: 1998-06-22
Abstract: multicast A method and apparatus for secure and scalable key management in a multicast network environment is provided. In a first portion, one or more seed nodes on the network receive a multicast transmission request for a cryptographic key from a requesting node. The seed node compares the identity of the requesting node with an authenticated predetermined list of nodes having permission to receive the cryptographic key.  If the comparison indicates the requesting node is not a member of the authenticated predetermined list, the seed node denies the multicast request. However, if the comparison indicates that the requesting node is a member of the predetermined list of nodes, the cryptographic key is transmitted using a secure unicast key distribution technique such as SKIP. A second portion concerns the requesting node which generates a multicast request to obtain the cryptographic key from one or more seed nodes and one or more keyed nodes on the internetwork. The multicast request for the cryptographic key is initially transmitted a minimum hop count over the internetwork to locate the closest seed node. The requesting node delays a brief time period waiting for at least one response from at least one seed node or keyed node on the internetwork. If the at least one response is not received within this time period, the minimum hop count is increased by a hop count increment and the requesting node repeats the above steps. Eventually, the requesting node increases the hop count and receives the cryptographic key over a secure unicast key management technique such as SKIP. As a final step, the requesting node is convered into a keyed node. The keyed node acts as a seed node and provides the cryptographic key to other requesting nodes on the internetwork.
Patent CA-2242757-A1 (CA)
Inventor: GAROSSINO PAUL
IPC: G01V1/32
Filed: 1997-10-20
Abstract: The present invention relates generally to a method of seismic data processing which provides a superior method of removing or attenuating some forms of seismic noise and can also be used as a basis for seismic attribute analysis and automatic trace editing. In particular, the present invention is directed toward the application of a Very Short-Time Fourier Transform (VSTFT) to seismic data, coupled with a novel approach to organizing and/or displaying the transformed data, so as to provide highly localized frequency analyses of seismic reflection events. The present invention utilizes a very great number of short overlapping Fourier transform windows, together with a Gaussian weight or taper function, to produce a plurality of near single-frequency "sub-band" traces for each seismic trace so analyzed. Although the present invention can be applied to a single seismic trace, it is preferably applied to a collection of seismic traces that are spatially related. Among the many uses of the transformed seismic data are selective removal of coherent noise events, analysis for seismic attributes related to subsurfaces features of interest, seismic trace creation by interpolation, and automatic identification and removal of noisy seismic traces.
Patent CA-2244790-A1 (CA)
Title: Method for evaluating drug metabolism and reagent compositions therefor
Inventor: MIZUTANI MAYUMI
IPC: G01N33/15
Filed: 1998-08-11
Abstract: This invention relates to a method for evaluating the susceptibility of pharmaceutical drugs to metabolism by a specific cytochrome P-450 isozyme, whichcomprises contacting the sample compound with a reagent composition prepared by adding the specific cytochrome P-450 isozyme to liver microsomes lacking said specific cytochrome P-450 isozyme in a carrier material. More particularly, thisinvention relates to a useful in vitro quantitative assay for drug metabolism by P-450 isozymes such as CYP2D6, CYP2C19, and CYP2A6. This invention also relates to a reagent composition which is useful for said in vitro assay.
Patent CA-2246508-A1 (CA)
Title: Method of controlling gas flow rate in gas phase polymerization apparatus and gas phase polymerization apparatus
Inventor: HATTORI FUMIO
IPC: C08F2/34
Filed: 1998-09-04
Abstract: The gas phase polymerization apparatus of the present invention comprises differential pressure detecting unit 31 capable of measuring a gaseous monomer pressure differential between an inlet side and an outlet side of blower 8; and flow rate controlling unit 33 comprising CPU 34 and blower controlling unit 35, wherein the CPU 34 is capable of computing parameter H based on the pressure differential measured by the differential pressure detecting unit 31 and the density of the gaseous monomer and capable of computing a number of revolutions to be exhibited by a blower impeller for obtaining desirable gas flow rate Q from the parameter H on the basis of characteristic curve of the blower 8 and wherein the blower controlling unit 35 is capable of controlling the number of revolutions of the impeller of the blower 8 by the number of revolutions computed by the CPU 34.  This gas phase polymerization apparatus enables not only controlling the flow rate of gaseous monomer blown into a fluid bed reactor during the polymerization reaction accurately in conformity with the state of gas in the fluid bed reactor but also realizing the flow rate control with excellent response characteristic and at low pressure loss.
Patent CA-2250910-A1 (CA)
Inventor: O'DONNELL HUGH JOSEPH
IPC: F16F7/00
Filed: 1997-04-03
Abstract: Cette invention concerne un mélange et un article flexible se composant de deux copolymères d'un oléfine et d'un monomère d'ester carboxylique non saturé en éthylène. Ces copolymères sont choisis de manière à ce que chacun d'entre eux comprenne plus de 6 % en poids d'un monomère d'ester carboxylique non saturé en éthylène ou, encore, de manière à ce qu'ils représentent plus de 10 % en poids du mélange. Dans le cas où ils possèdent des contenus en ester similaires ou, plus préciséement, qui diffèrent de moins de 6 % en poids, les copolymères sont choisis de manière à ce qu'ils présentent une différence, entre leurs flux à l'état fondu, qui soit supérieure à 8 environ. Dans le cas où ils possèdent des contenus en ester non similaires ou, plus précisément, qui diffèrent de plus de 6 % en poids, ces copolymères sont choisis de manière à ce que le rapport entre leurs flux à l'état fondu soit inférieur ou égal à 2 environ.
Patent CA-2252331-A1 (CA)
Title: Sampling pll for high resolution radar systems
Inventor: SCHUSTER HARALD
IPC: H03L7/091
Filed: 1998-11-03
Abstract: A low-noise sampling PLL for high-resolution radar systems wherein the reference frequencies are taken from a line spectrum (SPK), which has been generated from the mixture of a low quartz oscillator frequency (Fl) with a high quartz oscillator frequency (F2), with the quartz oscillator frequencies (Fl, F2) being synchronized. The invention is employed in connection with sampling PLLs for high- resolution radar systems with a controllable frequency oscillator, whose output signal is partially coupled out into a feedback branch and compared with reference frequencies in a phase comparator.
Patent CA-2252522-A1 (CA)
Title: Fluted filter media
Inventor: RISCH DANIEL T
IPC: B01D25/00
Filed: 1997-04-25
Abstract: Fluted filter media includes filter material (100) having a plurality of flutes formed therein having alternating ends of adjacent flutes closed (120) to force fluid through filter material. A first embodiment of the filter media includes tapered flutes which have the open ends ( 122) of the flutes larger in cross-section than the closed flutes (120), wherein the up-stream open flutes converge toward the downstream end and the upstream closed end flutes diverge toward the downstream end. A second embodiment includes filter media which is asymmetric formed with dissimilar upstream and downstream flute cross-sections with larger flute openings to the upstream side of the filter. A third embodiment includes filer media with an up-stream edge crushed to improve flow at the upstream edge. A fourth embodiment includes filter media with the upstream sealing material recessed from the upstream edge for reducing effects from blockages at the upstream edge of the filter.
Patent CA-2253479-A1 (CA)
Inventor: CASELLA DAVID WAYNE
IPC: H02G1/08
Filed: 1997-05-06
Abstract: An air flow activated shuttle (1) for pulling a draw line (6) through a length of conduit (2) having entry and exit end, said shuttle comprising a shaft (3) having a leading end (4) and a trailing end (5); means (7) on said trailing end which receives and retains a leading end of said draw line; at least one air flow mitigation element (9, 10) attached to said shaft which at least partially interrupts an air flow introduced into the entry end of said conduit from an air source to said shuttle from the trailing end thereby urging said shuttle along said pipe urging said draw line therealong and through said exit.
Patent CA-2254147-A1 (CA)
Title: Method and apparatus for planning an atm network for an area of concentrated demand for transport bandwidth
Inventor: CHEN JIANG
IPC: H04L12/56
Filed: 1998-11-13
Abstract: A method and apparatus for ATM network planning is described.  ATM network planning involves designing an ATM network to support traffic demands, which may include voice, data, image and video traffic.  It is desirable to design a backbone network for a metropolitan area which minimizes the total network cost.   The design process includes the determination of network topology, location and configuration of switches, dimensioning of all links, etc.   A heuristic method is described which provides a near-optimal  lowest  cost network design with  the  cost reasonably certain to be close to the optimal solution. The advantage is a versatile method which can reliably produce a lowest cost network plan in a reasonable time.
Patent CA-2255588-A1 (CA)
Title: A method for the delignification of fibrous material and use of a catalyst
Inventor: WEYERMUELLER THOMAS
IPC: D21C9/16
Filed: 1997-05-20
Abstract: The invention refers to a method to delignify fibrous material comprising an aqueous suspension of fibers which has a consistency between 5 % - 40 %, with a peroxy compound that is used in amounts between 0.5 % - 10 % based on bone dry fibrous material, and with a metal complex of the general formula (1): ¢LnMnmXp!zYq wherein Mn stands for manganese or iron, which can be present in oxidation state II, III, IV or V or in mixtures of these states; n and m are the integers 1-4; X is a coordinating ligand; p is an integer from 0 to 12; z is the charge of the complex and can be positive, neutral or negative; Y is a counter-ion or -molecule which depends on the charge of the complex; q is equal to z divided by the charge of Y; and L is a ligand and is represented by a macrocyclic organic molecule with general formula (2) wherein R1, R2, R3 and R4 can be either zero, H, alkyl, aryl or otherwise optionally substituted; D and D' are either N, NR, PR O, or S, wherein R can be substituted by H or alkyl or aryl or otherwise optionally substituted; t and t' are whole integers from 2 to 3, s is an integer between 2 and 4, u is an integer from 1 to 20, and v is 0 or 1; this metal complex is used at an amount of 0.0001 % - 0.1 % based on bone dry fibrous material, wherein the fibers are delignified at an initial pH-level between 7.5 and 13.5, at a reaction temperature between 20 ~C and 130 ~C, and with a reaction time between 15 and 360 minutes. Further, the invention relates to the use of a metal complex.
Patent CA-2256617-A1 (CA)
Title: Method and apparatus for minimizing chroma subcarrier instability caused by a video line scrambling system
Inventor: QUAN RONALD
IPC: H04N7/169
Filed: 1997-06-17
Abstract: In certain video scrambling systems, composite video is imperfectly separated into luminance and chrominance and scrambled in such a way that an unstable residual chroma color subcarrier remains in the luminance channel. When this unstable residual subcarrier subsequently is summed with stabilized chroma, the resultant composite color signal has small but visible amounts of color subcarrier instability that causes a noisy color signal when descrambled or when displayed on a television display device. A coring circuit is disclosed which provides means for substantially removing the unstable residual chroma subcarrier from the luminance channel, thereby substantially reducing color subcarrier instabilities. An improved coring technique also is disclosed using adaptive chroma coring, which is achieved by adjusting the amount of coring applied in accordance with the amplitude of the chrominance signal. Thus, if the program video input has high levels of color saturation, the chroma coring is electronically turned up. Conversely, if the input video program is essentially in black and white (no color content), then the coring circuit essentially is electronically turned off. The coring techniques also are applicable to enhance the luminance-chrominance separation of video comb filters frequently used in video circuits such as, for example, television sets and video recorders.
Patent CA-2259446-A1 (CA)
Inventor: CARDEN ROBIN A
IPC: B22D17/22
Filed: 1997-05-21
Abstract: An improved soluble core for die casting metals or metal matrix composites is formed of a mixture of salt and about 0 to 20 weight % of ceramic material blended together to produce a homogeneous mixture and compacted under pressure to produce a soluble core having little or no porosity. The ceramic material can be in the form of fibers, particulates, whiskers, and/or platelets, and has a melting temperature greater than that of the salt. The core can include a thermally insulating outer ceramic coating to enable the core to withstand higher die casting temperatures than conventional salt cores. The improved soluble core is removable with hot water and/or steam and the core material can be reclaimed for reuse. The process is used to form hollow articles.
Patent CA-2260018-A1 (CA)
Title: Brake check handheld refractometer
Inventor: COTTON CHRISTOPHER T
IPC: G01N21/41
Filed: 1998-07-21
Abstract: A refractometric apparatus and method for monitoring the percentage of water in hydraulic fluids employ a temperature sensitive device allowing a user to obtain accurate and correct readings of various measured properties on the reticle of the apparatus. In particular, the temperature sensitive member comprises a prism-wedge-mirror combination in conjunction with a bimetallic strip. The combination ensures the proper angular displacement of a light beam inside the refractometric apparatus and, therefore, the correct readings on the reticle.
Patent CA-2261369-A1 (CA)
Title: Dispositif d'accrochage d'un moteur d'aeronef
Inventor: LA BLAYE SEBASTIEN
IPC: B64D27/26
Filed: 1999-02-02
Abstract: L'invention concerne un dispositif d'accrochage d'un moteur d'aéronef sur un pylône (20) fixé à une aile ou au fuselage. Le dispositif comprend une ferrure (26), fixée au pylône (20) par des vis (34, 36), et au moins deux bielles (28, 30), reliant la ferrure à une pièce (22) de structure du moteur. Pour permettre l'implantation de moteurs de plus grands diamètres en préservant la tenue mécanique et sans accroître les perturbations aérodynamiques, on place les écrous à barillets (38, 40) dans lesquels sont vissées les vis (34, 36), ainsi que certains axes reliant les bielles (28, 30) à la ferrure (26), dans les mêmes alésages (42, 43) de celle-ci.
Patent CA-2262186-A1 (CA)
Inventor: SCHWARTZBECK ROBERT JAMES
IPC: C22B3/04
Filed: 1999-02-17
Abstract: A method for dissolving copper metal comprising circulating an aqueous solution of monoethanolamine through a bed of copper metal, and simultaneously passing a source of oxygen through the bed of copper metal; an apparatus for dissolving copper metal comprising a receptacle for containing copper metal, a receptacle for containing an aqueous solution of monoethanolamine, means for pumping the monoethanolamine from the receptacle containing the monoethanolamine to the receptacle containing the copper metal, and pressure means for providing air to the receptacle containing the copper metal; and a process for preserving wood wherein the wood is infiltrated with gaseous carbon disulfide, and impregnated with an aqueous solution of copper ions and dimethylamine, are disclosed.